微激光烧蚀电感偶合等离子体质谱多元素分析环境物质

采用微激光烧蚀电感偶合等离子体质谱分析了环境物质中的11种元素(镁、钾、钙、铁、镍、铜、锌、铷、铯、钡、铅)。将日本国立环境研究所(NIES)认证标准物质(CRM)No.3小球藻(chlorella),No.7茶叶,No.9果囊马尾藻(sargasso)及国家标准技术研究所(NIST)标准参考物质(SRM)1573西红柿叶和1568小麦粉,分别用基体相似的NIESNo.1胡椒藤和No.10-c小麦粉校准各元素测定灵敏度。让薄薄一层粉末状样品紧紧粘在一小块粘胶纸上,不需要另外的样品制备。测定方法有较高的灵敏度,且其分析过程简单快速。 

Multielemental Analysis of Environmental Materials by Micro-Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

Eleven elements (Mg, K, Ca, Fe, Ni, Cu, Zn, Rb, Sr, Ba, Pb) of several environmental matrices were determined by micro-laser ablation inductively coupled plasma mass spectrometry. Among these samples are the reference materials (CRMs): No. 3 Chlorella, No. 7 Tea Leaves and No. 9 Sargasso certified by the National Institute for Environmental Studies (NIES) (Japan) and the standard reference materials (SRM) of National Institute of Standard and Technology (NIST). 1573 Tomato Leaves and 1568 Rice Flour. The calibrations were based on the individual elemental sensitivities derived from matrix-matched standards: NIES No. 1 Pepperbush and NIES No. 10-c Rice Flour, respectively. The powdered sample was simply tightly stuck on the surface of an adhesive tape (about 8mm×8mm) to form a thin layer. No additional sample preparation is necessary. The analytical method has high sensitivity and the procedure is simple and fast.